What do you think are the most effective methods to limit particle numbers from GDI engines?

摘要

"Mixture formation is key. If you do a good job there you should be able to keep this under control. The whole discussion whether the particle numbei makes sense or not is a different issue. You can imagine that with the same total emissions you could pack all the particles into a larger one, then you could fulfil it. So it also has a lot to do with what the particulates do in the exhaust - whether they agglomerate.